Sedimentation-basin.



Patented May 2 wuentoz J/ ozu man F. W. KEENEY & J. M. PERKINS.

SEDIMENTATION BASIN.

APPLICATION FILED Dic. I2. 1916.

UNITED sTATEs PATENT oEEIcE.y

l lrami W. KEENEY AND JOSEPH M. PERKINS, or OKLAHOMA, oxLAHoMA.

sEnIMENTATIoN-BASIN.

To all 'whom t may ,concern Be it known that we, FRED W. KEENEYI and y JOSEPH .M PERKINS, citizens of the United States of America, and residents of Oklahoma, county of Oklahoma, State of Oklahoma, have invented certain new and useful Improvements in Sedimentation-,Basina of which the following is a full and clear specification.

The object of this invention is to provide a simplyconstructed apparatus which will efi'ectually accomplish the sedimentation action because of the complete elimination of all baffles, weirs, sharp turns, `or other obstructionswh-ich would cause eddies or currents and thus would retard the deposition of the sediments, as more fully hereina central receiving-well f. From the point l d the" channely gradually narrows and deepens to the aforesaid sediment-discharging exitA c. f This channel also -inclines gradually downwardly from 'its inlet to its Aoutlet c.

The liquid to be clarified is pumped or otherwise supplied to the inlet through a suitable pipe line g, and thence the liquid Hows with a gradually decreasing speed to the point al, this decrease in speed being caused by the gradual increase in cross-sectional area of the channel.' This decrease in thespeed of -low as well as Athe elimination of all sharp corners and other-obstructions insures a high degree of sedimentation beforethe clarified liquid overflows into the receiving well f. Clarified liquid may be drawn from the well f -in any suitable manner through discharge pipe k. The wall of the spiral channel may be constructed -ofany suitablematerial; we prefer constructing it of reinforced concrete or brick.

When the sediment has accumulated on the bottom of the channel to a sufficient exy l Specification of Letters Patent.A

Patented May '22, 1917.y

Application led December 12, 1916. Serial No. 13,448. L

tent to require it to be removed, this removal may be readily accomplished by opening a valve j in a pipe line connected to the outlet c, whereupon a continuous movement'of the liquid Vfrom the inlet to the outlet will be obtained, and this flow of liquid will carry with it the deposited sediment.

When this* washing-out operation is per-4 formed, it is desirable that the level of the liquid shall be kept at such a point that all the infiowing liquid lwill pass out at the discharge. c and not overlo'w'into the receiving-well f; in order to assist in accomplishing this washing-out operation quickly and thoroughly, we prefer incliningthe bottom wall of the channel outwardly and downwardly, asl shown, in order that, the scour- 'ing action willbe facilitated bythe centrifugal action of the liquid, as isobvious.

In the wall ofthe central well f, we preopenings [c at a point above where the sludge or' sediment will deposit.

anyothersuitable closure devices. Before dischargingthe lsludge at c, these holes may be opened to permit the clear liquid to be drained into the clar-liquid-well, thereby avoiding wasting a considerable quantity of partially clarified liquid every time the basin is flushed out.

It will be understood that the clear-liquid-4 va sedimentation channel having an overiow point as well as a sludge-,discharge point and being spirally -arranged and increasing in width land depth as well as inclining downwardly from its inlet end to its overflow or discharge point, said channel from said overflow or discharge point being gradually decreased inwidth and increased in depth toward the dischargepoint of the sediment or sludge.

v 3. In an apparatus of the class set forth,

Thesel ports may be closed by plugs, a's shown, orv

.fer 'to form three or more equally-spaced sol a sedimentation channel having an overflow point as well as a sludge-discharge point and being spirally arranged and increasing in width and depth as well as inclining downwardly from its inlet end to its overflow or discharge point, said channel from said overflow or discharge point being gradually decreased in width and increased in depth toward the discharge point of the sediment or sludge, a central receiving chamber or well being provided for the reception 0f the clarified overflow liquid.

4. In an apparatus of the class set forth, a sedimentation channel having an overflow point as well as a sludge-discharge point and being spirally arranged and increasing in widthY and 'depthas well as inclining downwardly from its inlet end t'o its overflow or-discharge point, said channel from said overflow or discharge point being gradually decreased in width and increased wall of said receiving chamber or well being provided with an opening or openings having removable closures at a point above the normal line of the sludge deposit.

In testimony whereof we hereunto aiix our signatures this 24 day of November. 1916.

FRED W. KEENEY. JOSEPH M. PERKINS.

Witness LESLIE C. HANsoN. 

